Thank you for your interesting comment. Pin2 is the input to a unity gain buffer that drives Pin3 (Vout), "a voltage control loop." I will go with LT's design to use that pin so that it auto-adjusts the bias of Q3 and Q4.
@@buildaudioamps Thank you for your early reply. I was referring to fig.19 (pg. 13) in the application information section of the LT1166 datasheet. Avoiding use of the Vin (pin-2) seems to give a better performance for use as an audio amplifier. This is also highlighted in the book (pg. 315, Fig. 13.18) by Cordell. I am in process of building the above circuity you, and I hope you will take lead in building the suggested revision of this amplifier. Thanks!!
@@RavindraDesai-c9q Thank you again for the comments. The 100w version that is shown in Fig. 19, page 13, on the LT1166 app seems to be a good future project. However, to start off, Project 75 has to be built first to show the capabilities of the LT1166 in its simplest application in controlling the bias. Then perhaps, if time allows, to a more complex project like the Fig. 19 version.
@@RavindraDesai-c9q Hi, did you ever try to simulate the amplifier given by fig. 19 of the LT1166 datasheet with LTSpice? I tried today the whole day long but with no success. It starts with the fact that the model of the LT1009 voltage reference does not work properly and I had to use a different current source for the simulation. But even there the output of the amplifier is clamped to a fixed voltage without anything else happening.
Thank you. Sometimes your wish may come true. But I'll "try" to be as full time DIYer as I can be and enjoy building audio electronics projects and share to you. It is always said "If I can do it, you can too."
Hello, I really liked your project. Does this amplifier need a circuit to protect the speakers in case the output transistors are shorted???
This should protect your speakers: buildaudioamps.com/other-audio-related-projects/ -uPC1237 Speaker Protection and Power ON Delay Project
Do you plan to design another one soon not using the Vin (pin-2) of lt1166? Thanks!!
Thank you for your interesting comment. Pin2 is the input to a unity gain buffer that drives Pin3 (Vout), "a voltage control loop." I will go with LT's design to use that pin so that it auto-adjusts the bias of Q3 and Q4.
@@buildaudioamps Thank you for your early reply. I was referring to fig.19 (pg. 13) in the application information section of the LT1166 datasheet. Avoiding use of the Vin (pin-2) seems to give a better performance for use as an audio amplifier. This is also highlighted in the book (pg. 315, Fig. 13.18) by Cordell. I am in process of building the above circuity you, and I hope you will take lead in building the suggested revision of this amplifier. Thanks!!
@@RavindraDesai-c9q Thank you again for the comments. The 100w version that is shown in Fig. 19, page 13, on the LT1166 app seems to be a good future project. However, to start off, Project 75 has to be built first to show the capabilities of the LT1166 in its simplest application in controlling the bias. Then perhaps, if time allows, to a more complex project like the Fig. 19 version.
@@RavindraDesai-c9q Hi, did you ever try to simulate the amplifier given by fig. 19 of the LT1166 datasheet with LTSpice? I tried today the whole day long but with no success. It starts with the fact that the model of the LT1009 voltage reference does not work properly and I had to use a different current source for the simulation. But even there the output of the amplifier is clamped to a fixed voltage without anything else happening.
I would like to learn to assembly module please. The transfo, to condensator to input and output. To create the power amplifier
Send an email request to support@buildaudioamps.com
hi , kindly share the circuit diagram of this project ,
th-cam.com/video/r3f8fW3GMks/w-d-xo.html
For the BOM send a request at support@buildaudioamps.com
how much current required for one channel
A measured 29.37Vrms across an 8-ohm load is about 3.67A
I really wish you sold your boards to the public
Thank you. Sometimes your wish may come true.
But I'll "try" to be as full time DIYer as I can be and
enjoy building audio electronics projects and share to you. It is always said "If I can do it, you can too."
Hi